package com.ruoyi.common.utils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.*;
import java.util.Date;

import org.apache.commons.lang3.time.DateFormatUtils;

import java.util.Calendar;

/**
 * 时间工具类
 *
 * @author ruoyi
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static String[] parsePatterns = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate() {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }

    public static final Date dateTime(final String format, final String ts) {
        try {
            return new SimpleDateFormat(format).parse(ts);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), parsePatterns);
        } catch (ParseException e) {
            return null;
        }
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算相差天数
     */
    public static int differentDaysByMillisecond(Date date1, Date date2) {
        return Math.abs((int) ((date2.getTime() - date1.getTime()) / (1000 * 3600 * 24)));
    }

    /**
     * 计算时间差
     *
     * @param endDate   最后时间
     * @param startTime 开始时间
     * @return 时间差（天/小时/分钟）
     */
    public static String timeDistance(Date endDate, Date startTime) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - startTime.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    /**
     * 增加 LocalDateTime ==> Date
     */
    public static Date toDate(LocalDateTime temporalAccessor) {
        ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 增加 LocalDate ==> Date
     */
    public static Date toDate(LocalDate temporalAccessor) {
        LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
        ZonedDateTime zdt = localDateTime.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 返回两个日期的时间间隔
     */
    public static int DateDiff(Date start, Date end, String interval) {
        // 创建两个Calendar对象分别表示起始时间和结束时间
        Calendar startTime = Calendar.getInstance();
        Calendar endTime = Calendar.getInstance();

        // 设置起始时间
        startTime.setTime(start);
        // 设置结束时间
        endTime.setTime(end);

        // 计算相应的时间差（年、月、周、日、小时）
        int yearDiff = endTime.get(Calendar.YEAR) - startTime.get(Calendar.YEAR);
        int monthDiff = (endTime.get(Calendar.MONTH) + 1) - (startTime.get(Calendar.MONTH) + 1);
        int weekDiff = (int) (Math.floor((double) (endTime.getTimeInMillis() - startTime.getTimeInMillis()) / (7 * 24 * 60 * 60 * 1000)));
        int dayDiff = (int) (Math.floor((double) (endTime.getTimeInMillis() - startTime.getTimeInMillis()) / (24 * 60 * 60 * 1000)));
        int hourDiff = (int) (Math.floor((double) (endTime.getTimeInMillis() - startTime.getTimeInMillis()) / (60 * 60 * 1000)) % 24);

        switch (interval) {
            case "0":  //返回日期的天数间隔
                return dayDiff;
            case "1":  //返回日期的周间隔
                return weekDiff;
            case "2":  //返回日期的月份间隔
                return monthDiff;
            case "3":  //返回日期的年份间隔
                return yearDiff;
            case "4":  //返回日期的小时间隔
                return hourDiff;
        }
        return 0;
    }

    /**
     * 根据日期返回日期在星期中编号
     */
    public static int weekNoByDate(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        // 获取当前日期对应的星期（1-7），其中1表示周日，2表示周一，依此类推
        int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
        return dayOfWeek;
    }

    /**
     * 根据日期返回日期在月中编号
     */
    public static int monthNoByDate(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        int dayOfWeek = calendar.get(Calendar.DAY_OF_MONTH);
        return dayOfWeek;
    }

    /**
     * 根据日期返回星期几
     */
    public static String weekNameByDate(Date date) {
        // 获取当前日期对应的星期（1-7），其中1表示周日，2表示周一，依此类推
        int dayOfWeek = weekNoByDate(date);
        String rebak = "";
        switch (dayOfWeek) {
            case Calendar.SUNDAY:
                rebak = "星期日";
                break;
            case Calendar.MONDAY:
                rebak = "星期一";
                break;
            case Calendar.TUESDAY:
                rebak = "星期二";
                break;
            case Calendar.WEDNESDAY:
                rebak = "星期三";
                break;
            case Calendar.THURSDAY:
                rebak = "星期四";
                break;
            case Calendar.FRIDAY:
                rebak = "星期五";
                break;
            case Calendar.SATURDAY:
                rebak = "星期六";
                break;
        }
        return rebak;
    }
}
